Pace: One last post from me despite your petulant response........
On all aircraft the Lift Vector is displaced from the Weight Vector.
The Thrust Vector is usually displaced from the Drag Vector.
The act of trimming resolves the moments between the four forces to achieve a stable situation. Change any one parameter and the aircraft will need to be retrimmed if it is to continue to fly at the same speed as before. Do you still not see why the application of power will tend to make a conventional aircraft climb (stick-free)??